function f() /*Scope Closed:false | writes:false*/
{
  var b = "bb";
  var a;
  a = '1' + '3';
  a += '2';
  a = '3';
  a += b;
  a += '1' + '3' + '4' + '5' + '6';
  a += a.replace('2', '3');
  a += a.split("2").join('6');
  a += 2;
  var c;
  c = 1;
  c += 2;
  c = {};
  c = [];
  var b = {
    message: 12
  };
  // d = a - 1;
  // b - 2;
  // c - 3;
  return 1-2,b=1,c=4;
}

var d =f();
  console.log(d)